Speedtest measures the speed between your device and a test server, using your device's internet connection. Several factors can impact the speed recorded by a test:

Devices (phones, tablets, PCs, etc…) can have very different Wi-Fi and cellular radio capabilities. This means you might get one Speedtest result on one device and a different result on another, even using the same provider. Some devices may not be able to measure the full speed of your internet service. It’s also possible that your Wi-Fi router doesn’t support the full speed of your service.

Speedtest servers may perform differently. Generally, you will get faster speeds from servers closer to you. We recommend testing to a variety of test servers to get the most complete picture of your speed. Speedtest has the world’s largest testing server network, which means you will always have the benefit of testing to a server near your geographic location.

Other speed testing services use different servers in different locations than Speedtest, so differences in speeds between testing services are not uncommon.

Browsers (Chrome, Firefox, Edge, Safari, etc…) have different capabilities and may provide different results, particularly on high-speed connections.

Before you contact your internet service provider (ISP) or mobile carrier, check to see if you’re running any ongoing downloads or other programs like video chat that might be hogging your bandwidth. Close those and test again. If your Speedtest result still seems slow, reboot your phone or computer, modem and router. Then make sure that your router does not have any Quality of Service (QOS) features turned on. If that doesn’t fix the problem, here are a few more steps you can try.

Contacting your ISP or carrier for help is a good next step after you’ve gone through these steps. Keep in mind that on higher bandwidth connections (150 Mbps and above), you will need a higher quality router to keep up.

Speedtest offers a network of over 10,000 hosted servers around the globe so that you always have testing options. At the start of a test, Speedtest automatically chooses a nearby server with a fast ping result to measure the maximum potential of your internet connection. You can always change the testing server to a different one than the default selection and we encourage testing to different servers to compare results.

By selecting a new server, you are changing the location or host of the server you are testing your internet connection against. In particular, many sites and streaming services may host their content on servers that are far away from your current location, which could translate to slower speeds and pings from those services.

No matter the server you choose, all tests run on Speedtest reflect the speed of your connection from your current ISP or carrier. Testing to a server hosted by an ISP or carrier does not necessarily tell you how fast your connection would be if you were to sign up for their offered services.

Your computer’s firewall or a proxy server might be blocking communication over port 8080, which will limit the number of servers available for testing.

Though our server network is always growing, it’s possible that we don’t yet have a host in your area. If you’d like to host a Speedtest server, details are on our network page.

Why am I getting different speeds between my computer and my phone/tablet? #

Speedtest is measuring your real-time network connection, so tests taken within a few minutes of each other might vary a little based on network congestion and available bandwidth. If your Speedtest results are significantly different, make sure that you’re:

Testing the same connection. If one device is on Wi-Fi and the other is not, you’re testing the speeds of different connections.

Testing to the same server. Speedtest automatically selects a server to test to based on ping, but you can also select a server to test to.

Also, note that there are large variations in Wi-Fi and cellular radio quality and MIMO stream handling quality between devices. These variations can cause a device to deliver slower test results than another device or computer.